Support IIIF Presentation API 3 with map folios process

The map folios process currently requires a `sequence` structure to be defined in the IIIF manifest. However, with the IIIF Presentation API 3, a manifest no longer requires a `sequence`. Instead, a default ordering can be assumed based on the `items` of a manifest or can be specified using a `Range`. A manifest without a sequence would be a breaking change for the map folios process. See https://iiif.io/api/presentation/3.0/change-log/#141-remove-sequence-in-favor-of-ranges-items-and-behavior-value-sequence for more information about this change in the Presentation API.

Start by reading the map folios process and the IIIF Presentation API 3 change described in the linked documentation. Trace where the process requires a manifest's sequence, then verify that manifests using items for default ordering or a Range are handled without breaking existing manifests.

Written by the indexing model from the issue text.